Doh! My site_perl contains only LWP::Parallel, the libwww stuff resides in the vendor_perl tree: 
qwurx [shmem] /usr/lib/perl5/vendor_perl/5.8.8 > grep -r PERL_LWP_USE_
+HTTP LWP
LWP/UserAgent.pm:if ($ENV{PERL_LWP_USE_HTTP_10}) {

[download]

So the var in LWP::Parallel::UserAgent is wrong.. ;-)

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re^3: Forcing HTTP/1.0 and mangling headers by shmem
in thread Forcing HTTP/1.0 and mangling headers by yam

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